一、医疗器械开发动向纵观近年来医疗器械开发的历史,二十世纪前半期的重点放在放射线应用上,后半期在其基础上重点转向了对人体损伤少、诊断正确的器械的开发,其中包括与放射线全无关系的超声波的应用。但是,不管怎么说,二十世纪后半期给人类带来好处最大的、仍是X线CT和 I. Trends in the development of medical devices Looking at the history of the development of medical devices in recent years, the first half of the 20th century focused on the use of radiation. On the basis of the latter half, the focus turned to the development of devices that had less damage to human body and diagnosed correctly. This includes the use of ultrasound that has nothing to do with radiation. However, anyway, the greatest benefit to humanity in the second half of the 20th century is still the X-ray CT and